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The INTERNET Database of Periodic Tables

There are thousands of periodic tables in web space, but this is the only comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Mark R. Leach Ph.D.

Use the drop menus below to search & select from the more than 1300 Period Tables in the database: 

  Text Search:       




Year:  2014 PT id = 654, Type = data

IQS Periodic Tables

By Jordi Cuadros, a set of three pairs of periodic tables in Catalan, English & Spanish pointing out the differences between PT representations of atoms and PT representations of the material substances:

IQS Periodic Table

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –


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